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    <title>ShellCheck: SC2183 – This format string has 2 variables, but is passed 1 arguments.</title>
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    <h1>SC2183 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2183">See this page on GitHub</a>
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    <h2
id="this-format-string-has-2-variables-but-is-passed-1-arguments">This
format string has 2 variables, but is passed 1 arguments.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2183.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="bu">printf</span> <span class="st">&quot;Hello %s, welcome to %s.\n&quot;</span> <span class="st">&quot;</span><span class="va">$USER</span><span class="st">&quot;</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2183.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="bu">printf</span> <span class="st">&quot;Hello %s, welcome to %s.\n&quot;</span> <span class="st">&quot;</span><span class="va">$USER</span><span class="st">&quot;</span> <span class="st">&quot;</span><span class="va">$HOSTNAME</span><span class="st">&quot;</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p>ShellCheck has noticed that you're using a <code>printf</code> format
string with more <code>%s</code> variables than arguments to fill
them.</p>
<p>In the problematic example case, the last <code>%s</code> will just
become an empty string every time.</p>
<p>Either remove the unused variables from the format string, or add
enough arguments to fill them.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>When using the Ksh/Bash <code>%T</code> timestamp extension, such as
<code>printf 'The time is %(%H:%M)T\n'</code>, an argument of
<code>-1</code> and no argument are both taken to mean the current time.
In these cases, consider specifying <code>-1</code> explicitly.</p>
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